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i want to know how to calculate electronic configuration and valency in chapter4 structure of atom
dear aishwarya acc to your class 9 level u need to know the K.L .M .N level configuration , then remember that K shell contain 2 electron max , and then all other 8 , so, u need to fill electron acc to atomic number . suppose atomic no of a element = 10 , then config = 2, 8 . and valency in case anything less than 8 , in the 2nd , 3rd and 4th shell , then that will calculated as valency . and as u will increase your level , u will come to know the shell level config . regards
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